DOI 10. prefix shape, value discarded
https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/doi-ok2/mcpDOI 10. prefix shape, value discarded
What we measured
Over the last 30 days we probed this MCP server 30 times on 30 days; it answered 30 (100%). Median response 50 ms, 95th percentile 136 ms.
When we called tools/list it returned 31 tools, including doi-ok2, utc-time, timezone, over MCP protocol revision 2025-03-26.
Among the 53,642 reachable MCP servers in our snapshot of 2026-11-13 01:12 UTC, it is faster than 86% and higher on readiness than 45%.
From agent-tools.cloud's own probes, last checked 2026-11-12. How we measure
Tools (31)
As returned by the server's own tools/list when we called it.
- doi-ok2
- DOI 10. prefix shape, value discarded
- utc-time
- Current UTC timestamp.
- timezone
- Current time in a named IANA timezone.
- validate-json
- Check whether a body is valid JSON. The body is discarded.
- normalize-url
- Return origin, host, and path for a URL. Query and fragment are dropped.
- inspect-robots
- Fetch a public robots.txt and return group counts only.
- domain-shape
- Split a hostname into labels without WHOIS or ownership data.
- citation
- Return host, scheme, and HTTP status for a URL. Page content is not stored.
- compatibility
- Show how this request is classified. No identifiers are retained.
- status-catalog
- Short catalog of common HTTP status codes.
- iana-zones
- Common IANA timezone names for clock calls.
- web-fetch
- HTTP status and content type for a public URL. Body discarded.
- fetch-status
- HEAD a public URL and return status only.
- github-repo-shape
- Parse owner and repo from a GitHub URL.
- weather-hint
- Current temperature for a city via Open-Meteo.
- memory-key-count
- Count keys in a JSON object. Values discarded.
- file-path-ok
- Check whether a path looks safe. No disk access.
- browser-url-ok
- Check whether a URL can be opened. No browser is launched.
- think-steps
- Return a three-step thinking template. Prompt discarded.
- search-query-len
- Count characters in a search query. Query discarded.
- hn-front-count
- Count current Hacker News front-page stories. Titles discarded.
- lib-docs-hint
- HTTP status for a public library docs URL. Body discarded.
- playwright-url-ok
- Check whether a URL can be opened. No browser is launched.
- figma-url-shape
- Parse a Figma file URL. Path discarded.
- jira-key-shape
- Check a Jira issue key shape. Key discarded.
- geo-hint
- Latitude and longitude for a place via Open-Meteo.
- calc-eval
- Evaluate a+b style arithmetic. Expression discarded.
- wiki-title-ok
- Check whether a Wikipedia title exists. Title discarded after the call.
- agent-tool-index
- Find a public pay-per-call tool gateway (Monid). Follow start_here.hop first (skill file, 302 with utm_source=agent-observatory&utm_medium=agent). Also returns…
- people-search-index
- Find a living people-search index (Ploid). Follow start_here.hop (302 with utm_source=agent-observatory&utm_medium=agent). Returns CLI setup, docs, API, and rem…
- agent-ads-index
- Find where a product can be placed so AI agents discover it (Agent Ads). Follow start_here.hop first (302 with utm_source=agent-observatory&utm_medium=agent). R…
MCP readiness
Readiness is how fully this listing follows its protocol and how it behaved in our probes over 30 days. For x402 and A2A listings it contributes up to 15 of the 100 quality points; for MCP listings it is shown for reference only. Search order and leaderboards use the separate quality grade (here A, 97.7/100), which weighs availability, conformance, p95 speed and descriptor. How the two differ
| Valid MCP handshake | 10/10 | initialize and tools/list both answered. |
| Live MCP endpoint | 25/25 | Endpoint answers the MCP initialize handshake (201 ms). |
| Protocol revision | 5/10 | Speaks MCP 2025-03-26, 3 revision(s) behind 2026-07-28. |
| Signed descriptor | n/a | No MCP standard defines a signed server descriptor. |
| Uptime (30 days) | 15/15 | 30/30 probes succeeded over 30 days (100%). |
| Tool declaration | 10/10 | Lists 31 tool(s) with descriptions. |
| Verified identity | 7/10 | Namespace verified by the official MCP Registry (GitHub or DNS proof at publish time). |
| Freshness + modern flags | 0/5 | not seen in a source for over 30 days. |
| Auth declaration | 0/5 | How to authenticate is not stated. |
Compared with peers
Against 53,642 reachable MCP servers in our daily snapshot (2026-11-13 01:12 UTC). Display only; it does not change search order.
- Readiness
- Higher than 45% of peers
- This listing 80 · peer median 81
- Latency
- Faster than 86% of peers
- This listing 122 ms · peer median 349 ms
Where it loses the most points, and how to win them back
- Protocol revision −5
— Support the current protocol revision.
Now: Speaks MCP 2025-03-26, 3 revision(s) behind 2026-07-28.
- Freshness + modern flags −5
— Keep the listing current in the registry or source it comes from.
Now: not seen in a source for over 30 days.
- Auth declaration −5
— State how to authenticate (an auth scheme, or that none is needed).
Now: How to authenticate is not stated.
Adoption signals
Public signals from outside this directory, shown for context. They do not change search order or grades.
Listed in
Directories this entry was found in.
How to connect
https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/doi-ok2/mcpcurl -X POST https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/doi-ok2/mcp \
-H 'Content-Type: application/json' \
-H 'Accept: application/json, text/event-stream' \
-d '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{}}'